(CNN) -- Country singer Randy Travis is hospitalized in critical condition with a viral heart infection, his publicist said Monday.

Travis, 54, was admitted to an unidentified Texas hospital on Sunday because of complications related to his "recently acquired viral cardiomyopathy," Travis spokesman Kirt Webster said in a written statement.

Travis had recently been on the road, performing in Detroit on June 28 and Chicago on June 29. He was set to do a show in Deadwood, South Dakota, on Wednesday.

He appeared well during business meetings on Friday and Saturday, Webster said. "Then on Sunday, it hit him."

Viral cardiomyopathy is a disorder where a virus attacks the muscles of the heart, causing the heart to beat slower, according to the U.S. Centers for Disease Control and Prevention's website. In some cases, the heart can stop, it said.

"Viral cardiomyopathy can be caused by 30-plus different viruses, but it's almost impossible to pinpoint which virus it is," said Dr. Ramin Oskoui, a cardiologist and internal medicine specialist in Washington. "Hospitals use viral cardiomyopathy as a 'catch all' diagnosis."...

Country legend Randy Travis made his first public appearance since suffering a stroke last July (13) and he appears to be on the mend after his harrowing ordeal.The 54-year-old singer was admitted to...

A little over three weeks since being hospitalized in Texas, Randy Travis has been discharged and relocated to a physical therapy facility."Thanks to all the fans and friends for your continued prayer...

Country singer Randy Travis is awake and in stable condition after undergoing emergency surgery following a stroke last Wednesday (10Jul13).Surgeons operated on the star at the Heart Hospital Baylor P...

NASHVILLE, Tenn. — Country music stars and fans joined together to urge prayers for Randy Travis on Thursday after he underwent brain surgery following a stroke at a Texas hospital.Travis remained in...